Process and apparatus for producing waterproofing material and product produced thereby



Dec. 1, 1925. 1,563,642 r T. w. MORSE PROCESS AND APPARATUS FOR PRODUCING WATERPROOFING MATERIAL AND PRODUCT PRODUCED THEREBY Filed March 4, 1922 lllllll,

Patented Dec. 1, 1925.-

UNITED STATES 1,563,642 PATENT OFFICE.

THOMAS W. MORSE, OF RIDGEFIELD PARK, NEW JERSEY, ASSIGNOR TO THE FLINT- KOTE COMPANY, OF BOSTON, MASSACHUSETTS. A COREORATION P MASSACHU- SETTS.

PROCESS AND APPARATUS FOR PRODUCING WATERPROOFING MATERIAL AND PRODUCT PRODUCED THEREBY.

. To all whom it may concern:

Be it known that I, THOMAS V. Mouse, :1 citizen of the United States, residing in the city of Ridgefield Park, county of Bergen, and State of New J ersey, have invented certain new and useful Improvements in Processes and Apparatus for Producing lVaterproofing Material and Products Produced Thereby, of which the following is a specification.

This invention relates to a process and apparatus for making waterproofing mate-. rial and refers more particularly to a process for imposing a film or layer of waterproofing material onto a fibrous sheet during the forming operation. I

The single figure is a sectional side of the apparatus.-

Referring to the drawings, a suction cylview inder 1 is mounted in a vat 2 which is sup plied with paper stock or pulp flowing through the wells 3 and 4 separated by a artitlon 5. The flow of the stock is shownstock to the vat as it is needed and to maintain a proper level about the suction wheel. A bafiie Wall or plate 7 is positioned in the bottom of the vat opposite the gate to direct the course of the paper stock in a manner shown by the arrows so that it will flow properly and be drawn up into the screened suction cylinder. The suction cylinder or mold is mounted in the usual manner on trunnions not shown on the sideof the vat. A tube 8'centrally situated alon the axis of the cylinder, communicates witi avacuum pump not shown in the drawings, the vacuum pumpfurnishing a means for imposing a sucking action upon the mouthpiece or port 9 at the end of the stationary tube 10. Thecylinder 11 is closed at both ends and is constructed to pass through the ends of the vat forming journals ortrunnions to carry the mold or suction cylinder. The cylinder 1 is divided into a plurality of sections divided by radially positioned partitions 12 which register with the port 9 in the rota tion of the cylinder so that the vacuum action of the pump is successively imposed Application filed March 4, 1922. Serial No. 541,118.

upon each of the sections of the cylinder. The cylinder is driven by any suitable power means not shown, in the direction of the arrows and its travel draws up the paper stock from the vat into a thin continuous sheet, the fibrous pulp: engaging the outer screen of the cylinder and riding thereon to a position in front of the suction pipelO. At a point directly in front of this suction pipe is positioned a reservoir containingwaten proofing material such as asphalt and other bituminous pitchy materials contained in a substantially non-adhesive emulsion. This emulsion is of the following character: The asphalt, While in substantially liquid phase, is thoroughly mixed and emulsified with water and an emulsifying agent, to form a substantially non-adhesive. emulsion, the asphalt being in a dispersed condition and r in the dispersed phase of the emulsion, a

water and emulsifying agent enveloping non-adhesive films around these adhesive f waterproofing partlcles. This emulsion 1s --drawn onto the surface of the sheet as it passes the suction section of the revolving cylinder, the emulsion being transmittedfrom the reservoir 13 in which it is held onto the sheet, over the lip or spreader blade 14 which is positioned to uniformly and evenly distribute the Waterproof emulsion in a film or layer on the surface of the sheet which rises from the vat on the screened cylinder in its rotation. The suction action imposed by the var um pump tends to draw this emulsion coating layer or film onto the stock and. there fixedly incorporate it with the fibers of the sheeted stock. In this manner, not only a sheet of concentrated waterproofing material may be imposed upon the surface of the the couch roll 16 as shown by the arrows, is directed to the driers. Then it is desired to produce a heavy sheet, successive stages similar to the one explained, may be positioned adjacent each other and the sheet may be built up to the desired thickness by combining the plies formed in the separate vats; In the drawings, only the outlines of the adjoining vat are shown, the details being omitted to limit the explanation as the construction and process in the separate forming operations is identical.

In addition to the fact that the suction action will tend to draw the waterproofing material into a more unitary combination with the fibrous sheet, it will also withdraw from the sheet, the surplus water, producing thereby a drier sheet and one that may be run over the rolls of themachine at a more rapid rate of speed, thus facilitating the forming of this waterproof material.

I claim as my invention:

1. A process for producing waterproofing material, consisting in forming a. sheet from librous stock on a forming cylinder, imposing a layer of Waterproofing material in the form of an emulsion on the surface of the sheet immediately subsequent the forming operation, and intimately combining the waterproofing and the sheeted stock by subjecting the coated and formed sheet to a local vacuum action at or immediately subsequent to the imposition of the Waterproofing material on the sheeted surface.

2. A process for producing waterproofing material, consisting in forming a sheet from fibrous stock on a. forming cylinder, spreading a waterproofing substance in emulsion form on the surface of the sheet immediate 1y subsequent the forming operation, and incorporating the Waterproofing substance with the sheet by subjecting the sheet to a local vacuum action at or immediately subsequent the point at which the waterproofing material is added, where by the waterproofing substance is drawn into intimate relation with the fibrous sheeted stock.

3. In an apparatus for producing waterproofing material, the combination with a rotatable forming cylinder mounted in a var containing fibrous watery stock, a source of supply mounted immediately adjacent the forming cylinder, separate from the vat for applying a waterproofing substance on the surface of the formed sheet immediately subsequent to formation, means positioned within the forming cylinder for subjecting the sheet only to a local vacuum action at a point at or immediately subsequent to the point at which the waterproofing substance was applied.

THOMAS w. MORSE. 

